David h



(No Model.)

D. H. VALENTINE.

PRESERVING AND PROTBGTING PILES.

Patented AugJ7, 1883.

INVBNTOR:

WITNESSES ATTOBNEIS.

Fries.

ATENT DAVID H. VALENTINE, OF BROOKLYN, NEWV YORK.

JPR'ESERVING AND PROTECTING PILES.

SPECIIEICA'JL'ION forming part of Letters Patent No. 282,807, datedAugust 7, 1883.

Application filed April 4, 1883. (No model.)

To all whom it may concern Be it known that I, DAVID H. VALENTINE, ofBrooklyn, in the county of Kings and State of New York, have invented anew and useful Improvement in Preserving and Protecting Piles, of whichthe following is a full, clear, and exact description.

The object of my invention is to devise prac tical means for protectingthe wooden piles of bridges, docks, and other structures from beingeaten by worms and insects, and from the destroying effect of constantwetting and drying of the piles at the surface of the ground or water;and to these ends my invention consists in the peculiar construction andarrange. ment of the parts, as hereinafter more fully set forth, andpointed out in the claims.

Reference is to be had to the accompanying drawings, forming partof thisspecification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional elevation, showing a pile having my preservingand protecting shield and outer covering applied thereto. Fig. 2.isafront elevation, showing the casing used for molding the shield aroundthe piles 5 and Fig. 3 is a sectional plan viewof the pile, shield, andeasing taken on the line 00 x of Fig. 2.

A represents a shield that is molded around the pile B after the pilehas been driven into the ground, and extends from the ground or mud (orslightly below the surface thereof) up the pile, so that the upper endof the shield stands above high-water mark. Theshield is composed ofPortland or any other suitable hydraulic cement, or of asphaltumconcrete, and is by preference molded with the enlargement (4 at thebottom, as shown in Fig. 1, to form a suitable base to prevent theshield from settling and the shield is by preference formed at the topwith the cup 1), into which a quantity of oil, asphaltum, or pitch orother suitable material may be poured to preserve the wood of the pile,and to make a waterproof joint between the shield and the pile.

In molding the shield A, I employ the sectional easing or mold O, whichis composed of two sections, 0 c, that are adapted to be placed aroundthe pile, as shown in Figs. 2 and 3, and,

- to be trussed together by the hinged sectional hoops d d, and bolts 6e, that pass through the free bent endsfll 2' thereof, as shown clearlyin Fig. 3. .The sections 0 c of the casing or mold thus placed andlocked around the pile will then be lowered to the mud, and their lowerends settled slightly into the mud, forming a coffer-dam around thepile. The water in the casing (should there be any) will now be pumpedout by a suitable pipe and pump, and then the mold or casing will befilled with the cement, concrete, or other material for forming theshield A. The mold or casing having been filled to the top, the cup bwill be formed with a trowel, and the casing or shield willbe left inplace until the cement or concrete shall have become set or sufficientlyhardened to remain in place without the support of the mold, whereuponthe casing will be removed, and then, if the outer covering, D, is to beused, it will be put around the shield and stitched in place. This outercovering is by preference made of strong, coarse, heavy canvas, butother strong and cheap material might be used; and the covering, beforebeing placed around the shield, has the wide hem f formed at one end, inwhich is placed a quantity ofcement, concrete, stones, or other heavymaterial for weighting the canvas for carrying the lower end of thecovering down to and holding it around the bottom of the shield A, aswill be understood from Fig. 1, 'so that the shield will be thoroughlyprotected from the wash of the water. In this manner it will be seenthat the pile is thoroughly protected and preserved, not only from theaction of the water and the ravages of worms and .wood-eatin g insects,but also from the weather and. from floating ice, and hence the strengthand durability of the pile is greatly increased by means of the shieldA. Besides, the cost and labor of applying the shield is comparativelysmall,

and the shield, when applied, is durableand practical for its purpose.

It is for the sake of economy that the molds O are removed forsubsequent use and the covering D substituted but where the expense isno special object it is designed to leave the molds 0 upon the shield A,which will greatly increase the efficiency of the protection; andinstead of placing the canvas covering around the shield A after themold O has been removed, it might be placed within the mold be- 2. Thecombination, With the shield A, mol ded upon the pile B, of the outercovering, D,

provided with the hem f, to receive weights to carry and hold the lowerend of the covering down around the bottom of the shield, sub stantiallyas described, and for the purpose set forth.

DAV-ID H. VALENTINE.

WVitnesses:

\ H. A. VVEs'r,

C. S DGWIQK.

